Getting cold because you’re getting error code 223 from your Lennox® furnace?
This indicates your furnace’s low pressure switch is open. Due to the malfunction, your system will not work for your safety.
Turn to the Experts at A-PLUS Service Experts to deal with mending this furnace error. Our NATE-certified technicians are among the best in the industry when it comes to understanding and repairing furnace problems.
Your satisfaction is critical to our team. That’s why we back our furnace repair work in Waldorf with a 100% Satisfaction Guarantee* for a year.
How a Low Pressure Switch Works
Pressure switches are an essential part of the heating operation.
Here’s how your furnace works after the thermostat starts to call for heat:
- Your furnace’s control board begins the draft inducer blower motor. This exhausts combustion gases from the heat exchanger and pulls in new gas and air so the burners can start.
- When the pressure switch senses that enough air is being pulled into the burners, it closes and tells the control board to ignite the furnace.
- Your furnace ignites and heats your house.
A two-stage furnace has more than one pressure switches, which permit it to run at different speeds—and use less energy.
What Happens When a Low Pressure Switch Malfunctions
The low pressure switch may be open for a couple reasons.
There could be a:
- Obstructed vent
- Stopped condensate drain
- Cracked hose
There could also be a problem with the switch itself, the inducer or the circuit board.
Your furnace will tell you there’s an issue with a red flash from its indicator light, which it uses to feature error codes. It has this red light to flash code, like Morse code.
You might observe fast flashes or an alternating slow flash as it replays a fault code.
Estimated Repair Cost for Furnace Error Code 223
The cost to fix your furnace depends on what’s wrong with it and the time it takes to repair it.
Here are average replacement costs for several components that could be affected:
- Pressure switch—$40 to $350
- Inducer—$600 to $1,500
- Circuit board—$200 to $600
Call the Experts at A-PLUS Service Experts
When you need furnace service, you can call on the professionals at A-PLUS Service Experts to handle the fault code and get your heat working again.
Call us at 301-747-3140 or schedule an appointment online today.